Temporal and regional differences in the expression pattern of distinct retinoic acid receptor-beta transcripts in the chick embryo.

Temporal and regional differences in the expression pattern of distinct retinoic acid receptor-beta transcripts in the chick embryo.
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鸡胚中不同视黄酸受体-β转录物表达模式的时间和区域差异。

DOI:
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发表时间:
1991
期刊:
影响因子:
4.6
通讯作者:
G. Eichele
G. Eichele
中科院分区:
生物学2区
文献类型:
--
作者:
S. Smith;G. Eichele

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维甲酸(RA)是一种信号分子,显然参与了多种形态发生过程,如发育和再生脊椎动物肢体的图案化。RA与特定的细胞内受体结合,构成一个多基因家族。RA受体(RAR)与特定靶基因的调控区结合,从而控制这些基因的表达。在这里,我们报道了鸡RAR-β的序列和时空表达模式。来自整个胚胎和肢芽的RNA的Northern杂交显示,存在大小分别为3.2、3.4和4.6kb的转录本。使用两个核探针,一个与所有三个RAR-βmRNAs杂交,另一个针对4.6kb转录本,我们通过原位杂交发现RAR-β转录本在肢体芽间充质、颅面间充质和后脑神经外胚中的分布存在差异。在后脑,4.6kb的mRNA在菱形核5和6之间的收缩水平显示出表达的前边界。对神经板期胚胎的原位杂交检测表明,这个表达边界已经在这个阶段确定了。除了在胚胎中有几个具有不同空间模式的RA受体表达外,我们的数据表明,来自单个受体基因的转录本的表达模式也可以差异表达,从而为调节RA的作用提供了另一个水平。
Retinoic acid (RA) is a signaling molecule apparently involved in a variety of morphogenetic processes, such as patterning of developing and regenerating vertebrate limbs. RA binds to specific intracellular receptors that constitute a multigene family. RA receptors (RAR) bind to the regulatory region of specific target genes and thereby control the expression of these genes. Here we report the sequence and spatiotemporal expression pattern of RAR-beta from chick. Northern blots of RNA from whole embryos and from limb buds reveal the presence of transcripts of 3.2, 3.4, and 4.6 kb in size. Using two riboprobes, one that hybridizes to all three RAR-beta mRNAs and a second one, specific for the 4.6 kb transcript, we found by in situ hybridization a differential distribution of RAR-beta transcripts in limb bud mesenchyme, in craniofacial mesenchyme and in hindbrain neuroectoderm. In the hindbrain the 4.6 kb mRNA exhibits an anterior boundary of expression at the level of the constriction between rhombomeres 5 and 6. Examination of neural plate stage embryos by in situ hybridization indicates that this boundary of expression is already defined by this stage. In addition to having several RA receptors that are expressed with distinct spatial patterns in the embryo, our data indicate that the expression pattern of transcripts derived from a single receptor gene can also be differentially expressed, thus providing another level for regulating RA action.
DOI: 10.1016/0012-1606(89)90163-2
发表时间: 1989
影响因子: 2.7
作者:
Maden,M;Ong,DE;Summerbell,D;Chytil,F;Hirst,EA
通讯作者: Hirst,EA
脊椎动物肢体形态发生的分子方法。
DOI: 10.1242/dev.107.supplement.121
发表时间: 1989
期刊: Development (Cambridge, England)
影响因子: --
作者:
Smith,SM;Pang,K;Sundin,O;Wedden,SE;Thaller,C;Eichele,G
通讯作者: Eichele,G
DOI: --
发表时间: 1988
期刊: The Journal of biological chemistry
影响因子: --
作者:
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DOI: --
发表时间: 1988
期刊: The Journal of biological chemistry
影响因子: --
作者:
Kakkad,BP;Ong,DE
通讯作者: Ong,DE
DOI: 10.1073/pnas.80.18.5525
发表时间: 1983-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
HAUSSLER, M;SIDELL, N;MANGELSDORF, D
通讯作者: MANGELSDORF, D